Ummm... I got the washers at the hardware store. I don't remember what size they are. I just brough the switch with me and got whichever washers had the correct inside diameter. I had to trim down the outside diameter on a lathe.
I drilled 3 holes in the same pattern Bennyboy did on my front nose piece and put the lights there. I'll get some pics. I plan on puttin my key in the reverse location since I removed it since I don't have the rev. rev limiter and it is useless without one.
same way I mounted my lights benny boy, used the old key hole for a water temp gauge (hole was cut bigger a nd slightly modded, and the bracket cut down) with the key spliced out, no longer needed. and the reverse lever installed to the side of my rear frame rail (I never find much use for it)..When I do its not ina exactly a easy location to get to but its there..